I tell you the truth, until heaven and earth disappear, not the smallest letter, not the least stroke of a pen, will by any means disappear from the Law until everything is accomplished. 

Anyone who breaks one of the least of these commandments and teaches others to do the same will be called least in the kingdom of heaven, but whoever practices and teaches these commands will be called great in the kingdom of heaven.

For I tell you that unless your righteousness surpasses that of the Pharisees and the teachers of the law, you will certainly not enter the kingdom of heaven.

Matthew 7:13-15
“Enter through the narrow gate.

For wide is the gate and broad is the road that leads to destruction, and many enter through it. 

But small is the gate and narrow the road that leads to life, and only a few find it. 

“Watch out for false prophets. They come to you in sheep’s clothing, but inwardly they are ferocious wolves.

Matthew 19:17-19
“Why do you ask me about what is good?” Jesus replied.

“There is only One who is good.

If you want to enter life, obey the commandments.”